The installation and maintenance of ball valves

The most common valves are gate valves, globe valves, ball valves, plug valves, butterfly valves, diaphragm valves, etc. These valves   function are to connect or cut off the medium in the pipeline. Today i want to talk about how to do installation and maintenance of ball valves.

Ball valve installation steps

1. The first step is to check whether the valve model is consistent with the working conditions, and pay attention to the connection size and medium flow direction to ensure that it meets the valve requirements;

2. Care must be taken to check whether there are dirt or sand particles attached to the valve cavity and sealing surface;

3. Before installing the valve, be sure to reserve the necessary space for the valve drive;

4. The valve must be installed vertically, not upside down;

5. During installation, the disc should stop at the closed position;

6. Tighten the bolts of each connection part evenly to avoid loosening;

7. Check the packing parts carefully, and ensure the flexible opening of the gate while ensuring the sealing of the packing;

8. Finally, we can install according to the valve and the installation steps of the valve installation manual; (Each type of valve has its own installation instructions)

How to maintain the ball valve

1. Take out the non-metal parts from the cleaning agent immediately after cleaning, do not soak for a long time;

2. Metal parts can be cleaned with gasoline, and non-metal parts can be cleaned with pure water or alcohol;

3. When cleaning, be careful to remove all grease, dirt, glue and dust attached to the wall surface;

4. When disassembling the ball valve, be careful to prevent damage to the sealing surface of the parts, especially non-metallic parts. It is best to use special tools when removing the O-ring;

5. Another point is that new parts must be cleaned during assembly;

6. Grease used. To be compatible with ball valve metal materials, rubber parts, plastic parts and working medium.

7. Normal working conditions, maintaining a harmonious temperature / pressure ratio;

8. In the closed state of the ball valve, there is still pressurized fluid inside the valve body. Before maintenance, relieve the pipeline pressure and leave the valve in the open position;

9. Downstream pipelines can only be disassembled after the pressure has been relieved;

10. If there is a slight leakage at the packing, the stem nut must be locked (do not lock too tight, the leakage can be stopped)